Selecting main technical specifications of the data aquisition system to improve the accuracy of using the electric response parameters

Diamond-like carbon (DLC) films have attracted much attention due to their useful properties and applications. These properties are quite variable depending on film preparation techniques and conditions, DLC is a metastable state formed from highly non-equilibrium phases during the condensation of ionized particles. The nature of the films is therefore strongly dependent on their particular chemical structures. In this study, electron energy loss spectroscopy (EELS) was used to investigate how the chemical bonding configurations of DLC films vary as a function of sputtering power densities. The electrical resistivity of the films was determined, and related to their chemical structure.DLC films with a thickness of about 300Å were prepared at 0.1, 1.1, 2.1, and 10.0 watts/cm2, respectively, on NaCl substrates by d.c. magnetron sputtering. EEL spectra were obtained from diamond, graphite, and the films using a JEOL 200 CX electron microscope operating at 200 kV. A Gatan parallel EEL spectrometer and a Kevex data aquisition system were used to analyze the energy distribution of transmitted electrons. The electrical resistivity of the films was measured by the four point probe method.

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Electric Response Audiometry: Clinical Applications

Otolaryngologic Clinics of North America ◽

10.1016/s0030-6665(20)32564-0 ◽

1978 ◽

Vol 11 (1) ◽

pp. 7-18

Author(s):

Derald E. Brackmann ◽

Weldon A. Selters

Keyword(s):

Clinical Applications ◽

Electric Response ◽

Electric Response Audiometry

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Light in the Museum: Experiences and Challenges

Light & Engineering ◽

10.33383/2018-147 ◽

2019 ◽

pp. 25-30

Author(s):

Lyubov E. Volgina

Keyword(s):

The State ◽

Technical Specifications ◽

Initial Focus

The article is focused on the peculiarities of the lighting in the museum halls, restoration workshops, depositories, the operation of lighting equipment, and the organization of exhibition lighting in the halls of the State Tretyakov Gallery. Initial focus areas in the development of technical specifications for accent lighting equipment have been outlined. The information may be useful to the staff of museums, galleries, etc. engaged in the exhibition activities.

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Compact Energy Measuring System for Short Pulse Lasers

Metrology and Measurement Systems ◽

10.2478/mms-2013-0016 ◽

2013 ◽

Vol 20 (2) ◽

pp. 183-190 ◽

Cited By ~ 3

Author(s):

A. Barna ◽

I. B. Földes ◽

Z. Gingl ◽

R. Mingesz

Keyword(s):

Short Pulse ◽

Electronic Devices ◽

Laser Pulses ◽

Measuring System ◽

Electric Response ◽

Usb Interface ◽

Radiated Noise ◽

Fiber Optical ◽

Measurement Control ◽

Short Pulse Lasers

Abstract In experiments with short-pulse lasers the measurement control of the energy of the laser pulse is of crucial importance. Generally it is difficult to measure the amplitude of the pulses of short-pulse lasers using electronic devices, their response time being longer than the duration of the laser pulses. The electric response of the detector is still too fast to be directly digitized therefore a peak-hold unit can be used to allow data processing for the computer. In this paper we present a device which measures the energy of UV short (fs) pulses shot-byshot, digitizes and sends the data to the PC across an USB interface. The circuit is based on an analog peak detect and hold unit and the use of fiber optical coupling between the PC and the device provides a significant improvement to eliminate potential ground loops and to reduce conductive and radiated noise as well. The full development is open source and has been made available to download from our web page (http://www.noise.inf.u-szeged.hu/Instruments/PeakHold/).

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Tuning the Electric Field Response of MOFs by Rotatable Dipolar Linkers

10.26434/chemrxiv.8153198.v1 ◽

2019 ◽

Author(s):

Johannes P. Dürholt ◽

Babak Farhadi Jahromi ◽

Rochus Schmid

Keyword(s):

Electric Field ◽

Electric Fields ◽

Structural Changes ◽

Dielectric Behavior ◽

Two Dimensions ◽

Dielectric Constants ◽

Electric Response ◽

Dipole Strength ◽

Metal Organic ◽

Dynamics Simulations

Recently the possibility of using electric fields as a further stimulus to trigger structural changes in metal-organic frameworks (MOFs) has been investigated. In general, rotatable groups or other types of mechanical motion can be driven by electric fields. In this study we demonstrate how the electric response of MOFs can be tuned by adding rotatable dipolar linkers, generating a material that exhibits paralectric behavior in two dimensions and dielectric behavior in one dimension. The suitability of four different methods to compute the relative permittivity κ by means of molecular dynamics simulations was validated. The dependency of the permittivity on temperature T and dipole strength μ was determined. It was found that the herein investigated systems exhibit a high degree of tunability and substantially larger dielectric constants as expected for MOFs in general. The temperature dependency of κ obeys the Curie-Weiss law. In addition, the influence of dipolar linkers on the electric field induced breathing behavior was investigated. With increasing dipole moment, lower field strength are required to trigger the contraction. These investigations set the stage for an application of such systems as dielectric sensors, order-disorder ferroelectrics or any scenario where movable dipolar fragments respond to external electric fields.

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